Hello new here Ive been reading your forum and noting simular problems between my machine which is a mac g5 dual core .. I read 2004 was not a very good year in terms of things crashing. ironically I just bought a stand alone drive to back things too and then to burn dvds for backup as well.... We did my sons first and the following day i left room for 10 min went back in and my machine was black screen. I replaced the pram battery and pushed the pmu button "AFTER" replacing that battery and cleaning the machine "Dusty" It wont power up at all no boot up. Im thinking power supply and at same time thinking of moving both drives to my sons g5 to see if his machine sees those drives one then allows us a backup to the standalone anyway... I want to remove the secondary drive first do that one then see if the primary drive will even show up. Im nervous about loading both of them at same time... also my son said something about having to set switches to make that primary secondary before mounting into his machine... I must mention his machine is intel based mine is not. I was running tiger 10.4.10 Id just looked and it was either 4.10 or 11. I am in fear ive lost everything on the hard drives... how should i proceed on loading my old drives into the intel based machine to back up to stand alone as well try to burn those drives to cd or dvd ? Im thinking the secondary drive in my g5 has most of my music i do have some on ipod and I had alot of video and mp3 and 4 files there on my drives... I had a lacie 2 tb stand alone to back all of this too but it crashed and burned as well... I am concerned its a power supply or even worse.. First im trying to save my data on two drives... any help would be greatly appreciated I can do most of the work ive done my own pcs and some work on macs as well so im semi confident i could re seat a card or board. Im concerned about causing harm to my sons intel based machine.. even though it has 4 slots for adding in more drives..... Im wanting to back up first then burn dvds or cds of the data and then worry about the old g5. Thanks for reading..